I am currently trying to create a small product with my 3D printer.

The product consists of a flat wide stick first, which then is connected to a 45 degrees angled stick. What I now want to achieve is that the 45 degree angled plate gets to the same level as the flat plate when pressure gets added. So it goes from 45 degrees to 0 looking something like this:

enter image description here

I have been doing a bit of googling and came across something called a torsion spring which I assume could work pretty well looking like this: enter image description here

However, I do not currently own a torsion spring at home and I assume torsion springs cannot be made using a 3D printer. I was wondering if there is an optional solution for this task?

  • $\begingroup$ Your 3D printer prints in plastic, right? Which is presumably bendy to some extent (engineering.SE loves technical terms like "bendy"). If you want to make it bend at a particular point, why not make the plate thinner at that point. It would look something like a mesnager hinge. You may need to experiment with varying thickness to get the stiffness you want. $\endgroup$ – AndyT Mar 28 '17 at 10:57
  • $\begingroup$ Yeah I print with PLA. Ok I will look that up! Thanks for the tip. Would a hinge also automatically push down to 45 degrees after you release the pressure or would you need to push it down to 45 degrees yourself? That is why a spring would be nice because it would constantly pull down when pressure is not being added $\endgroup$ – Carlos Rodrigez Mar 28 '17 at 11:12
  • $\begingroup$ how many cycles does it need to flex. $\endgroup$ – agentp Mar 28 '17 at 11:25
  • $\begingroup$ So long as it's adequately made (not too thin), the hinge would return to (or almost to) its original position. However, this also depends on how frequently this piece would have to move, because fatigue (failure due to repeated use) would be a serious problem here. $\endgroup$ – Wasabi Mar 28 '17 at 11:25
  • $\begingroup$ @agentp What is cycles? I am a bit new to this area so pardon me! $\endgroup$ – Carlos Rodrigez Mar 28 '17 at 11:32

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